using System;
using System.Linq;
using System.Collections.Generic;


namespace ChooseLesserOfTheTwoEvils
{
    public class Program
    {
        public static void Main()
        {

            Console.ReadKey();
              
            TestPick8thOnEvilA();
            Console.WriteLine("------");
            TestPick8thOnEvilB();
            Console.WriteLine("------");
  
            Console.ReadKey();
        }
		        
		
		static void TestPick8thOnEvilA()
        {
            Console.WriteLine("TestPick8thOnEvilA");
            long eighth = EvilCompanyA.MathProvider.Fibonacci().Skip(7).Take(1).Single();
            Console.WriteLine("\nEvil A's 8th fibonacci is {0}", eighth);
        }
  
        static void TestPick8thOnEvilB()
        {
            Console.WriteLine("TestPick8thOnEvilB");
            long eighth = EvilCompanyB.MathProvider.Fibonacci().Skip(7).Take(1).Single();
            Console.WriteLine("\nEvil B's 8th fibonacci is {0}", eighth);
        }
	}
}


					
namespace EvilCompanyA
{
    public static class MathProvider
    {
        public static IEnumerable<long> Fibonacci()
        {           
            IList<long> il = new List<long>();
  
            long a = 0, b = 1;
  
            for (int i = 1; i <= 50; ++i)
            {
                Console.Write("eager{0} ",i);
                il.Add(a);
                long n = a;
                a += b;
                b = n;
            }
                    
  
              
            return il;
        }
    }
}
  
namespace EvilCompanyB
{
    public static class MathProvider
    {
        public static IEnumerable<long> Fibonacci()
        {
            long a = 0, b = 1;
  
            for (int i = 1; i <= 50; ++i)
            {
                Console.Write("lazy{0} ",i);
                yield return a;
                long n = a;
                a += b;
                b = n;
            }
        }
    }
}